package cn.fay.chapter15;

import java.util.ArrayList;
import java.util.Random;

class Product {
	private final int id;
	private String description;
	private double price;
	public Product(int IDnumber,String descr,double price) {
		id=IDnumber;
		description=descr;
		this.price=price;
		System.out.println(toString());
	}
	@Override
	public String toString() {
		return id+": "+description+", price: $"+price;
	}
	
	public void priceChange(double change) {
		price+=change;
	}
	public static Generator<Product> generator=new Generator<Product>() {
		private Random random=new Random();
		@Override
		public Product next() {
			return new Product(random.nextInt(1000), "Test", Math.round(random.nextDouble()*1000.0)+0.99);
		}
	};
}
class Shelf extends ArrayList<Product>{
	public Shelf(int nProducts) {
		Generators.fill(this, Product.generator, nProducts);
	}
}
class Aisle extends ArrayList<Shelf>{
	public Aisle(int nShelves,int nProducts) {
		for(int i=0;i<nShelves;i++){
			add(new Shelf(nProducts));
		}
	}
}
class CheckoutStand{}
class Office{}
public class Store extends ArrayList<Aisle>{
	private ArrayList<CheckoutStand> checkouts=new ArrayList<CheckoutStand>();
	private Office office=new Office();
	public Store(int nAisle,int nShelves,int nProducts) {
		for(int i=0;i<nAisle;i++){
			add(new Aisle(nShelves, nProducts));
		}
	}
	@Override
	public String toString() {
		StringBuilder sb=new StringBuilder();
		for (Aisle a : this) {
			for (Shelf shelf : a) {
				for (Product product : shelf) {
					sb.append(product).append("\n");
				}
			}
		}
		return sb.toString();
	}
	
	public static void main(String[] args) {
		System.out.println(new Store(14, 5, 10));
	}
}
